chromeos: Move files in //ash/common to //ash, part 2

ash/wm/window_dimmer.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/common/wm/window_dimmer.h"
+#include "ash/wm/window_dimmer.h"
 
 #include <memory>
 
-#include "ash/common/wm_shell.h"
-#include "ash/common/wm_window.h"
+#include "ash/wm_shell.h"
+#include "ash/wm_window.h"
 #include "base/time/time.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/layer.h"
 #include "ui/wm/core/window_animations.h"
 
 namespace ash {
 namespace {
 
 const int kDefaultDimAnimationDurationMs = 200;
 
@@ skipping 58 matching lines @@
     const HierarchyChangeParams& params) {
   if (WmWindow::Get(params.receiver) == window_ &&
       params.target == params.receiver) {
     // This may happen on a display change or some unexpected condition. Hide
     // the window to ensure it isn't obscuring the wrong thing.
     window_->Hide();
   }
 }
 
 }  // namespace ash